Wiring
Operating Manual PSSu E F 2DOR 8(-T)(-R)
21334-EN-13
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6
Wiring
6.1
General wiring guidelines
Please note:
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If short circuits occur between the cable from the output to the load and a supply line, it
will no longer be possible to switch off the load. Possible remedies:
– Use separate multicore cable for supply voltages
– Use dual actuators, e.g. two contactors in series.
– Use an additional shutdown device such as a main contactor
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Use appropriate wiring to exclude short circuits between the outputs!
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The actuators may be connected using unshielded cables.
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To prevent contact welding, a fuse should be connected before the output contacts (see
Technical details).
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With inductive loads, sufficient fuse protection must be provided on all output contacts.
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When installed at a height of over 2000 m above sea level, only protective extra low
voltage may be connected to the relay contacts.
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If voltages higher than 50 VAC or 120 VDC are connected to the relay contacts, please
note the following:
– Specific accident prevention regulations apply.
– For safety reasons, only the protective earth (PE) may be connected to the C-rail of
the supply group.
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Use copper wiring.
6.1.1
Mechanical connection of the base modules
Procedure:
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Use a flat blade screwdriver (DIN 5264-A)!
DIN 5264-A
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Strip the wire back 8 mm.
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If necessary, label the connection level with a colour marker [3].
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Base module with screw terminals:
– Use a screwdriver to loosen the screw on the screw terminal [1]
– Insert the stripped cable into the round fixing hole [2], as far as it will go.
– Tighten up the screw on the screw terminal.
